Luton to Carmarthen Trains

Trip Overview

The average train between Luton and Carmarthen takes 5h 5m and the fastest train takes 4h 37m. There is a train service every few hours from Luton to Carmarthen. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

5h 5m
Duration: 256 mi
Distance: £133
Average price: Hourly
Frequency

Train via Swansea

best

Take the train from Luton to Farringdontrain
Take the train from London Paddington to Swanseatrain
Take the train from Swansea to Carmarthentrain

5h 24m

£109–201

Luton to Carmarthen train times

Trains run hourly between Luton and Carmarthen. The earliest departure is at 12:03 AM at night, and the last departure from Luton is at 9:43 PM which arrives into Carmarthen at 6:47 AM. All services require a transfer at Farringdon and take an average of 5h 5m. The schedules shown below are for the next available departures.

Departing Saturday, October 24, 2026

3:43 PM → 8:28 PM
4h 45m • 3 changes
4:13 PM → 9:04 PM
4h 51m • 3 changes
4:43 PM → 9:41 PM
4h 58m • 3 changes
5:43 PM → 10:54 PM
5h 11m • 3 changes
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Departing Sunday, October 25, 2026

12:03 AM → 1:05 PM
14h 2m • 3 changes
9:43 AM → 2:50 PM
5h 7m • 3 changes
10:43 AM → 3:20 PM
4h 37m • 3 changes
12:43 PM → 5:25 PM
4h 42m • 3 changes
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Departing Monday, October 26, 2026

5:43 AM → 10:30 AM
4h 47m • 3 changes
6:52 AM → 11:45 AM
4h 53m • 3 changes
7:52 AM → 12:36 PM
4h 44m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Departing Tuesday, October 27, 2026

5:43 AM → 10:30 AM
4h 47m • 3 changes
6:52 AM → 11:45 AM
4h 53m • 3 changes
7:52 AM → 12:36 PM
4h 44m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Departing Wednesday, October 28, 2026

5:43 AM → 10:30 AM
4h 47m • 3 changes
6:52 AM → 11:45 AM
4h 53m • 3 changes
7:52 AM → 12:36 PM
4h 44m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Departing Thursday, October 29, 2026

5:43 AM → 10:30 AM
4h 47m • 3 changes
6:52 AM → 11:45 AM
4h 53m • 3 changes
7:52 AM → 12:36 PM
4h 44m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Departing Friday, October 30, 2026

5:43 AM → 10:30 AM
4h 47m • 3 changes
6:52 AM → 11:45 AM
4h 53m • 3 changes
7:52 AM → 12:36 PM
4h 44m • 3 changes
8:43 AM → 1:26 PM
4h 43m • 3 changes
Show more

Frequently asked questions

Want to know about travelling from Luton to Carmarthen? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.